Section 8: Startup And Shutdown; Filling The Rotofilter; Startup Procedure - Pentair PR AQUA ROTOFILTER Installation And Operation Manual

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SECTION 8: STARTUP AND SHUTDOWN

8.1 Filling the Rotofilter

The Rotofilter enclosure must be filled with water
prior to opening the inlet and outlet valves.
Priming the Rotofilter allows the correct water levels
between the inside and outside of the drum to be
reached. This ensures the drum does not become
overloaded, and that the screens, drive assembly
and support wheels are not damaged.
If the unit is already filled to the
NOTE
minimum water level, proceed to
the next section.
1. Ensure the inlet and outlet valves are closed.
2. Fill the sump with a suitable water source until
the minimum water level is reached. The water
level is identified in the specification documents.
3. Open the inlet valve. Open the outlet valve.
PR Aqua Rotofilter Drum Filter Installation and Operation Manual
™

8.2 Startup Procedure

1. Observe the area for any personnel or objects
that could be caught in a rotating part.
2. Ensure the Rotofilter is filled to the minimum
operating level. If the Rotofilter needs to be filled,
refer to the previous section.
3. Ensure the backwash throttling valve is
fully closed.
4. Open the inlet valve.
5. Open the outlet valve.
6. Open the backwash pump isolation valve.
7. Open the backwash throttling valve
one-quarter turn.
8. Turn on power to the Rotofilter control panel.
9. Turn the drum and backwash pump switches to
Manual Mode.
10. Observe the pressure gauge. Adjust the
throttling valve until the pressure gauge reads
between 5.6 to 7.0 kg/cm2 (80 to 100 psi).
Do not exceed 7.0 kg/cm2 (100 psi).
Pressure above 7.0 kg/cm2 (100 psi)
will damage the screens.
11. Turn the drum and backwash pump switches to
Automatic Mode.